Bessemerizing or conversion of copper mattes into blister copper.



. PATBNTED JAN. 21, 1908.

BESSBMERIZING OR CONVERSION OF COPPER MATTBS INTO BLISTER GOPPEIL,

J. D. BURGESS.

APPLICATION FILED APR. 25. 1906- 2 SHEETS-SHEET 1.

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QQQQ Jon-m D. Bus ness WITNESSES:

ATTE) No. 877,292. PATENTED JAN. 21, 1908.

J. D. BURGESS. I BESSEMERIZING OR'GONVERSION OF COPPER MATTES INTO BLISTER COPPER.

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APPLICATION} LB APR 6 2 SHEBTS SHEET 2 VIIIIIIIIIIIIIIIIIIIIIII/ INVENTQH. JOHN D. BURGESS ITNESSES:

. which the UNITED STATES PATENT OFFICE.

JOHN D. BURGESS, OF TUCSON, ARIZONA TERRITORY, ASSIGNOR OF TWO-THIRDS TO AUGUSTUS FORNIA.

TAYLOR 'AND WILLIAM H. TAYLOR, JR., OF SAN FRANCISCO, CALI- BESSEMERIZIN G 0R CONVERSION OF COPPER MATTES INTO BLISTER COPPER.

Specification of Letters Patent. Application filed April 25,1906. Serial n. 313,581.

' PatentedJ an. 21, 1905.

To all whom it may concern:

Be it known that JOHN D. Bnnenss, citizen of the United States, residing at Tucson, in the county of Pima and Territory of Arizona, has invented certain new anduseful Improvements in Bessemerizing or Conversion of Cop er Mattes into Blister Copper, of

fdllowin is a specification.

The invention re ates to apparatus adapted for the purpose, taking the mattes in molten condition, direct from the matting or other furnace, continuously, or intermittently, as same is discharged from the mattin'g furnace.

My invention has for its object, the substitution of peculiar apparatus for the ponderous converters now employed in the well known bessemerizing conversion of metals,

' and consists of novel apparatus and process,

which will hereinafter be fully described.

In the following description reference is had to the accompanying drawings, forming a part of this specification.

n the drawings Figure 1 is a side eleva tion, in illustration of my invention. Fig. 2 is a top plan view of apparatus illustrated in Fig.3 1. Fi 3 is a transverse sectional view taken on ine 33 of Fig. 1. Fig. 4 is a transverse. sectional view taken substantially on-line 44 of Fig. 1. Fig. 5 is a horizontal sectional view, taken on line 55 of Fig. 4, and Figs. 6 and 7' are respectively side and top plan views of detached castings forming a part of the apparatus constructed according to my invention. Fig. 8 is an en larged detail view of one of the eep holes.

, My general idea comprehen s taking'the mattes in molten condition direct from the matting or other furnace, and through the first stage of the operation, flowing same by gravity, the flow being accelerated by novel admission of blasts.

The generic idea comprehends flowing the molten mattescontinuously, through a series of communicating passageways or boxes 1 and with the flow accelerated by a series of another stage of the operation, I feed intothe molten mattes, comnn'nuted lime stonemixed-with coke-dust, or other carbonaceous matter.

the practice of my-inven'tion, may be stated as employing'in the first stage of operation, a

sheet steel box fifteen feet in lengt two feet square on the outside, the box being securely anchored to an approved base by anchor bolts, or otherwise. J

The box above described, is lined With some refractory material, or fire brick, leaving an inner circular, or oval opening extending from end to end of the box. It is contemplated fashioning the opening of sufficient size or capacity, to entertain any amount of matte discharged from any size or capacity of furnace to which the apparatus may be attached.

Air under pressure is admitted intoithe lined o ening throu h the box, the same be in fed from Suppl si es of the box. The air is fed into the lined opening through novel form of twyers, having suitable pee -holes at their outer ends, the peep-holes eing arranged in line with the passage-way through the twyers.

The twyers are arranged providing passage-Way from the air supply pipes, and made extending into the lined opening through the box, to a point suitably near its bottom. The twyers are disposed at an an gle pointing downwardly and toward the discharge end of the lined box employed inthe first stage of o eration;

The flow of iquid matte is not only accelerated through operation of the blasts of air as introduced by me into the lined opening through the box, but the oxygen thus introduced under pressure, causes the chemical reaction, expressed by the following equation,-

thus 2FeS 30 2'FeO 2SO,, quickly and continuously.

The desulfurized mattes is discharged from the first box, into the end of a second box,

supported, anchored and lined, substantially as t e box hereinbefore described.

The passage-way through the two boxes is connected by means of an interposed hea .cast iron s out, bolted .to the ends of bot boxes, an arranged therebetween, providing slightl eater fall than the endwise disposition 0 t e two boxes.

Itis' designed to form the spout substantially U-shaped, leaving its upper side 0 en,

ada ,ted for the introduction therethroug of fine y coniminuted silica, automatically fed.

y pipes upon opposite from a hopper provided with a spout, and

FeO +sio, =Feo SiO as being quickly and continuously accomplished;

The third stage or 'box i's connected the same as the first and second stages, 'i. -e. by a heavy cast iron spout, open on top and bolted to the ends of each box. This the third sta e or box is provided with twyers the same su boxes.

stantially as similar twyers hereinbefore described, leadin from air supply pipes upon both sides of t e box and disposed, extending into the opening therethrough.

At the connection between the second and third stages, or boxes, finely comminuted lime-stone, mixed with coke-dust, or other carbonaceous material is automatically fed into the open spout, under regulated control and from a stored su ply thereof, in a hopper substantially as emp oyed for delivery of material between the first and. second stages, or The added limestone gives greater fluidity to the siliceous-iron slag separated from the pure copper during the second stage of this operation, and the coke-dust develo s and restores heat lost during operation of t e second stage.

It is desi ed, at the end of the third stage, or box, to ow the blister copper by'gravity, into some rece tacle, carrying the remaining slag as float, a apted to be skimmed off leaving the blister copper to be ladled or tapped into desired molds.

Having thus outlined the general features of novelty residing in my invention, I will now roceed to describe in detail the preferred form of ap aratus employed by me, though obviously do not confine myself to the recise form of means utilized nor is success 1 operation of the apparatus limited to any particular size or dindension of parts.

Referring now to the several figures of drawin A denotes suitable lining arranged in the boxes B, forming a art of the first,

second and third. stage, am. in the makeup of the apparatus.

The lining may be formed of fire brick, constructed and adapted, when arranged in. place for leaving broken joints C therebetween.

The-several boxes indicated, B, B. It, are constructed with sides 1) having laterally disposed longitudinal edge flanges E.

The top and bottom of the several boxes B, B, B", consists of suitable plates F, adapted to overlie the flanges E of the side plates D.

G denotes anchor bolts extending do vVl'l through the flanges E and the top and bottom plates F, as shown by Fig. 4, and leading down suitably into the apparatus supporting base H, the lower ends of the anchor bolts being provided with any suitable shoe I, un-

derstood upon reference to Fig. 4.

It will be noticed upon reference to Fig. 1, that the top of the supporting base is disposed inclining downwardly from position of receiving end of the ap aratus. In the sides D of the several boxes B, B and through the box linin A, I provide openings J for introduction of peculiar twyers K, the latter roviding passage-way from air supply pipes J, extending along opposite sides of the boxes B, B, B I

The twyers K are constructed of T joints M fashioned with angular passage-ways, substantially as indicated in Fig. 5, and a nozzle N constructed to extend into the opening leading through the boxes, see Figs. 4 and 5, and with the nozzles N pointing downward and toward the discharge end of the several boxes B, B, B

A suitable pee holr is provided at O, in the T-joint M, t e same being arranged in line with the air passage-way through the nozzles N, adapted for seeing noses, when formed. The peep holes are closed with clear mica retained in place adapted to be removed for the introduction of a metal bar through the nozzles to break-up any noses or ooolings formed. I

I It is designed to arrange the inner end of the nozzles of the first stage, or box, at the bottom of the opening therethrough, the inner ends of the nozzles of the second box, about two inches higher, and the same end of the nozzles, em loyed with the third box, two inches higher than those in the second box.

P denotes the hoppers employed the same being designed for holding and feeding through means of suitable spouts Q, having cut-otf valves, fluxes such as silica, limestone and coke, or other carbonaceous dust, into the boxes, or stages of operation.

In the preferre' form of a paratus the several stages, or boxes B, B, B are separated by a heavy casting S, formed with its top side open, see Figs. 6 and 7.

The castings S have flanges T adapting them to be-securely bolted to the respective box-ends, see Figs. 1 and 2.

The hoppers P an arrai'iged to deliver the 'lluxes into the molten material, through the open top spouts Q, see Fig. 1, and suitabl y arranged over the open spouts 1, hoods U, are

provided for carrying away the gases formed end of last stage, or box, and a suitable tank' 1. The combination with an apparatus for' bessemerizing or conversion of copper mattes corn rlslng a suitably constructed box, of

fire.- rick lining in the box, the fire-brick lin- 'intothe box am ing being arranged so as to leave a longitudinal opening through the box, and the bricks being laid in brokenjoint arrangement and means for feeding compressed air'into the box, said means pointing downward and towards the discharge end of the box, substantially as described.

2. In an a paratus for besseinerizing. or conversion 0 copper mattes, comprising a box having recelving and discharge ends, twyers adapted for the admission of air therethrough, the twyers projecting downwardly at an angle toward the discharge end of the box. 3. In an apparatus "for bessemerizing or conversion of copper mattes, a series of communicating boxes, arranged end to end providing. a continuous passage way through the series of boxes, hollow castings arranged be-- tweenthe adjacent ends of the several boxes in the series thereof, means adapting the boxes andcastings to be securedtogether, and means adapted for feeding finely comminuted silica and lime stone into the hollow castings, whereby. to readily and quickly compel and assist the chemical changes desire 1 4. In an apparatus for bessemerizing or box having receive and discharging ends,

air into the box, the twyers bein arranged to direct streams toward the disc arge end of the box thereby, assisting flowing action of material through the box.

5. loan a paratus for bessemerizing or conversion 0 cop er mattes, having open end boxes arrange endto end in alinement, and provided with'suitable openings, an incline base providing support for the said boxes, anchoring means, means for the admission of air into the boxes under pressure, and means adapted for the supply of fluxes into the boxes, substantially as described.--

signature in presence of two witnesses I JOHN D. BURGESS. Witnesses:

J. B. HENDERSON,

CHAS. E. THOMAS;

In testimony whereof I hereby afiix my conversion of copper mattes, comprising a inclined twyers adapted for the admission of 

